检索结果-南通市图书馆

情境构建策略在高中思想政治课中的教学实践研究--以“在和睦家庭中成长”一课为例

在线全文

学校读者我要写书评

暂无评论

教育参考 2021年第1期 74-79页

作者：张尚达尹珺上海市师资培训中心上海200235

随着统编《思想政治》教材的全面铺开,教师如何“创造性地使用教材”,学会“用教材教”是当前新一轮课程改革中一个重要课题。创设不同复杂程度的情境是实现素养导向的思政课教与学的重要过程,这要求教师在教材使用的过程中,立足学生的... 详细信息

随着统编《思想政治》教材的全面铺开,教师如何“创造性地使用教材”,学会“用教材教”是当前新一轮课程改革中一个重要课题。创设不同复杂程度的情境是实现素养导向的思政课教与学的重要过程,这要求教师在教材使用的过程中,立足学生的认知起点,优化案例使用,构建不同复杂程度的情境,通过与情境相匹配的学科任务处理好教材、教学、学习三者的关系,重构教学内容,贯穿逻辑线索,在有效推进综合性学习的同时实现教材的创造性使用。

关键词：思想政治学科教材情境构建

Dual occupations of sulfur induced band flattening and chemical bond softening in p-type S_(y)Co_(4)Sb_(12-2y)S_(2y) skutterudites

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2022年第1期8卷 88-95页

作者： Jialiang Li Xiaolian Zhang Haoqin Ma Bo Duan Guodong Li Jiong yang Hongtao Wang Houjiang yang Ling Zhou Pengcheng Zhai Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics Wuhan University of TechnologyWuhan430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Materials Genome Institute Shanghai University99 Shangda RoadShanghai200444China

The electronegative filling in skutterudites not only broadened the scope of filling atoms,but also facilitated the preparation of p-type ***,the introduction of a single sulfur atom in the Co_(4)Sb_(12) cannot be achieved without charge compensation through the traditional equilibrium *** the present study,the dual occupations of S-atoms by self-charge compensation were shown as the most stable forms under high pressure,and a series of p-type S_(y)Co_(4)Sb_(12-2y)S_(2y) skutterudites was successfully prepared by high-pressure-high-temperature(HPHT)*** electronic structures and transport properties of as-obtained materials were investigated,and the related mechanisms were *** results suggested that the presence of S-impurities led to flattening of the electronic band that led to a higher Seebeck *** S-doped Co_(4)Sb_(12) displayed lower elastic modulus,elastic constant,and Debye temperature,thus indicating the chemical bond softening in *** thermal conductivities of S_(y)Co_(4)Sb_(12-2y)S_(2y) compounds reduced monotonously with the increase in *** study provides a new and promising avenue for optimizing the thermoelectric properties of p-type Co_(4)Sb_(12).

关键词： Electronegative filling skutterudites Self-charge compensation Band flattening Bond softening

Negative Phase Time for Particles Passing Through a Potential Well

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Negative Phase Time for Particles Passing Through a Potentia...

第九届全国量子光学学术报告会

作者： Li Chun-Fang WANG Qi (Department of Physics,Shanghai University,99 shangda Road,Baoshan,Shanghai 200436,People’s Republic of China)

The problem of how long it takes particles to tunnel through a potential barrier remains controversial,and a variety of definitions have been proposed for the tunneling time *** common feature of those definitions is the *** order to investigate whether the phase time is a possible candidate,the properties of the phase time taken for particles to pass through a potential well are studied. For a 1-dimensional square potential well of depth V and thickness a,the phase time taken for a particle of mass μ and energy E to travel through the well is calculated to be τ=((2μa)/(hk))((k(k+k′)-ksin2k′a/2k′a)/(4kk′+ksink′a))(1) where k=(2μE)/h,k′=[2μ(E+V)]/h,k=(2μV)/*** shows that when the following inequality holds, (k(k+k′))/(k)＜(sin2k′a)/(2k′a),(2) the phase time is *** sin2k′a/2k′a≤1,we know that if k(k+k′)/kg＜1,that is,if the energy of the incident particle is less than one half of the well depth,E＜V/2,one can always find a well thickness a,at which the phase time is negative. Similar results are also found in a 2-dimensional fully-relativistic optical *** is shown that the expression of the phase-time associated lateral shift of transmitted optical wave packets is much similar to that of the above-mentioned 1-dimensional quantum- mechanical phase *** phase time in the 2-dimensional optical problem is also shown to be negative under certain *** negative of the optical phase time results from the negative of the phase-time associated lateral shift. The question of whether the phase time is a possible candidate or not in such processes as barrier-tunneling and well-traveling can be experimentally tested by measuring the lateral shift of optical wave packets in the 2-dimensional optical set-up under the condition that the phase-time associated lateral shift is negative and comparing the measured data with theoretical results about the negative phase-time associated lateral shift.

关键词： negative phase time negative lateral shift quantum potential well

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

壶腹癌的超声诊断分型在外科治疗中的意义

中华超声影像学杂志 2000年第10期9卷 596-598页

作者：高上达何以敉林礼务福建医科大学附属协和医院超声科福州350001

目的　探讨壶腹癌超声诊断分型在外科治疗中的临床意义。方法　将 31例经手术病理证实的壶腹癌根据超声表现分为 3型 :I型 ,胆总管下段无肿块型 ;II型 ,胆总管下段小肿块型 ;III型 ,胆总管下段明显肿块型。各型均与手术方式对照。结果　... 详细信息

目的　探讨壶腹癌超声诊断分型在外科治疗中的临床意义。方法　将 31例经手术病理证实的壶腹癌根据超声表现分为 3型 :I型 ,胆总管下段无肿块型 ;II型 ,胆总管下段小肿块型 ;III型 ,胆总管下段明显肿块型。各型均与手术方式对照。结果　 31例中I型 5例 (16 .1% ) ,II型 11例 (35 .5 % ) ,III型 15例 (4 8.4% )。I型与II型合并手术切除率 (10 0 % )与III型的手术切除率 (6 0 .0 % )比较差异有显著性意义 (P <0 .0 1)。结论　壶腹癌超声诊断分型对术前制定手术方案。

关键词：超声检查胆管癌瓦特氏壶腹诊断治疗

以芳基碘为碘化试剂的苯酚衍生物的位点选择性C-H键碘化反应

在线全文

学校读者我要写书评

暂无评论

有机化学 2021年第9期41卷 3511-3520页

作者：张涛李尚达周春林王新超张孟高泽众李纲中北大学理学院山西太原030051 中国科学院福建物质结构研究所煤制乙二醇及相关技术重点实验室福州350002

富电子苯酚类化合物的位点选择性C-H键碘化是一个挑战性的反应.报道了一类钯催化的、利用4-碘基-3-硝基苯甲醚为温和的碘化试剂,实现无保护2-芳基苯酚和2-苯氧乙酸类化合物的C-H键碘化反应.该反应适用于一系列富电子的苯酚类衍生物,且... 详细信息

富电子苯酚类化合物的位点选择性C-H键碘化是一个挑战性的反应.报道了一类钯催化的、利用4-碘基-3-硝基苯甲醚为温和的碘化试剂,实现无保护2-芳基苯酚和2-苯氧乙酸类化合物的C-H键碘化反应.该反应适用于一系列富电子的苯酚类衍生物,且能够获得优秀的位点选择性和良好的官能团耐受性.结果表明,对于具有挑战性底物的C-H键碘化,经由形式复分解的C-H键碘化反应是一个潜在的有用方法.

关键词： C-H键碘化形式复分解位点选择性苯酚芳基碘化物钯催化

Thermoelectric transport properties in chalcogenides ZnX (X=S, Se): From the role of electron-phonon couplings

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2021年第2期7卷 310-319页

作者： Jincheng Ding Changdong Liu Lili Xi Jinyang Xi Jiong yang Materials Genome Institute Shanghai University99 Shangda RoadShanghai200444China School of Physics and Electronic Science East China Normal UniversityShanghai200241China

Electron-phonon coupling(EPC)is a key factor for thermoelectric properties of *** this paper,the thermoelectric properties of zinc-blende chalcogenides(p-type)ZnS and ZnSe have been studied through full evaluation of EPC from first-principles,including the influences on both electrical and thermal *** find that the polar longitudinal optical phonon scattering is the dominant mechanism for electrical *** to the triple degeneracy near the valence band maximum,the inter-band scattering also has detrimental contributions to the electrical *** phonon transport,it shows that the lattice thermal conductivity can be reduced by the electron-phonon scattering significantly at high carrier concentrations(e.g.,at 300 K with 10^(21) cm^(3) of hole,the reduction is-24.9%for ZnS and-28.4%for ZnSe,respectively).Finally,the p-type thermoelectric figure of merit(ZT)of two systems have been obtained,which are 0.129 for ZnS and 0.141 for ZnSe,at 700 K with their respective optimal hole *** work provides a complete and in-depth study of thermoelectric properties in chalcogenides ZnX from the role of *** results suggest EPC plays an important role on the thermoelectric properties and thus full evaluation of EPC is necessary especially for polar materials.

关键词： Thermoelectricity Electron-phonon coupling Electrical transport Phonon transport Chalcogenides

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于数据驱动的低压配电网线户关系识别方法

电力系统自动化 2020年第11期44卷 127-134页

作者：唐捷蔡永智周来羿应棋陈国培梁尚达张勇军广东电网有限责任公司广东省广州市510700 智慧能源工程技术研究中心华南理工大学电力学院广东省广州市510640 广州市奔流电力科技有限公司广东省广州市510700

低压配电网的线户关系自动识别是智能低压配电网实现的基础。通过分析低压配电网中负荷节点电压所呈现的空间、时间以及时空特性,依托"互联网+"智慧能源发展带来的海量电网运行数据,提出了基于数据驱动的低压配电网线户关系识别方法。... 详细信息

低压配电网的线户关系自动识别是智能低压配电网实现的基础。通过分析低压配电网中负荷节点电压所呈现的空间、时间以及时空特性,依托"互联网+"智慧能源发展带来的海量电网运行数据,提出了基于数据驱动的低压配电网线户关系识别方法。通过建立基于基尔霍夫电流定律的优化模型,并将其转化为二次规划问题求解,实现低压配电网线户关系识别。同时为了提高求解效率并解决空房用户的识别问题,提出了一种基于电压时空特性的电能表聚类方法。73用户算例系统和多个试点台区应用效果验证了所提方法的有效性,并分析了电能表计量误差、数据长度对识别结果的影响。

关键词：低压配电网线户关系二次规划电能表

Neuronavigation-Guided rTMS for the Treatment of Depressive Patients With Suicidal Ideation:A Double-Blind,Randomized,Sham-Controlled Trial

在线全文

学校读者我要写书评

暂无评论

Neuronavigation-Guided rTMS for the Treatment of Depressive ...

The Dynamical Mechanisms of the Cell Cycle Size Checkpoint

2020年浙江省医学会精神病学学术大会浙江省医师协会精神科医师分会第十三届年会

作者： Fen Pan Zhe Shen JianPing Jiao Jinkai Chen shangda Li Jing Lu Jinfeng Duan Ning Wei Desheng Shang Shaohua Hu Yi Xu Manli Huang

During the last decade,the problem of suicide has become more serious in individuals with *** transcranial magnetic stimulation (rTMS) is an effective treatment for major depressive disorder (MDD).This study aims to investigate the efficacy of magnetic resonance imaging (MRI)-based neuronavigation-guideddaily high-dose rTMS for rapidly improving suicidal ideation in treatment-naive patients with MDD.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chinese Physics Letters 2012年第10期29卷 253-256页

作者： FENG Shi-Fu YAN Jie LIU Zeng-Rong yang Ling School of Mathematical Sciences Soochow UniversitySuzhou 215006 Center for Systems Biology Soochow UniversitySuzhou 215006 Institute of Systems Biology Shanghai University99 Shangda RoadShanghai 200444

Cell division must be tightly coupled to cell growth in order to maintain cell size,whereas the mechanisms of how initialization of mitosis is regulated by cell size remain to be *** develop a mathematical model of the cell cycle,which incorporates cell growth to investigate the dynamical properties of the size checkpoint in embryos of Xenopus *** show that the size checkpoint is naturally raised from a saddle-node bifurcation,and in a mutant case,the cell loses its size control ability due to the loss of this saddle-node point.

关键词： point saddle bifurcation